WHO: Current and former mayors from major cities will provide insights into the resources and actions needed to develop and transform America's urban centers.

They include:

Manuel A. Diaz, mayor of Miami

Stephen Goldsmith, former mayor of Indianapolis

Marc H. Morial, former mayor of New Orleans

WHERE:University of Pennsylvania campus

Jon M. Huntsman Hall, 8th Floor Colloquium

3730 Walnut St.

Philadelphia

WHEN: 1:30 a.m., Wednesday, June 15

WHY: With more people living in urban settings than in any other time in history, urban mayors face even greater challenges in solving long-standing problems such as housing, transportation, education and employment. Mayors are also charged with maintaining the safety and wellbeing of these ever-increasing numbers of residents environmentally, socially and technologically. These mayors will offer their experiences and perspectives on how best to accomplish these undertakings.